1. Shaft dimensions confirmed by the elevator company's engineer- not just the builder.

2. Civil contractors and elevator companies have a shared written timeline with dependencies clearly marked.

3. Electrical load calculation done- confirm your DB board can handle the elevator's starting current (typically 15–20 amps for residential lifts).

4. Pit waterproofing completed and cured BEFORE equipment arrives- wet pits are the number one cause of installation delays.

5. Flooring and wall finishing around the elevator landing points confirmed as complete or deliberately left for post-installation.

6. Elevator company has confirmed delivery date in writing- equipment should not sit on-site for more than 3 days before installation begins.

7. AMC (Annual Maintenance Contract) terms reviewed and signed as part of the purchase agreement.

The best elevator installation experiences we have heard about all share one common factor- the elevator company took ownership of coordinating with other trades, not just delivering their own scope. Attico Elevators is one of the few companies offering this level of coordination for residential elevators in Delhi, and it shows in their client feedback.